Lower 1/3 co-witness means that the MRO is mounted higher than the iron sights resulting in a clearer field of view; The iron sights remain visible in the lower 1/3 of your optical window for use as a backup
Distance From Top of Mounting Rail to Optical Axis: 1.663 in.
Description
Trijicon mro lower 1/3 co-witness mount adapter, fits the Trijicon mro. Package includes: - 1 mount - 4 screws - 1 hex key. Specifications: - overall length: 1. 50" - Height of mount surface to optical axis: 1. 66" - Weight: 1. 78 oz. - Color: Black.
